This is a concept for an extraterrestrial type entity. The Foundation is no stranger to various intergalactic species. But what if there was entities so mysterious, no galactic civilization knows what they do?

I decided to base this off a "UFO" story I heard. Where a person claimed to look out there window to see a "black cube" sitting outside their ranch house. While this object did not directly communicate with this individual, They felt compelled to not directly observe the object "as if something bad would happen or that it wasn't for them to see".

Id' like some ideas for initial and possibly active containment if anyone has an idea. Otherwise I'm still forming that idea.

- The object in question is a non reflective black cube about the hight of a 1 story house.

- This object instills a sense of aversion, although this effect can very from benign to mild.

- The object is theoretically capable of flight and based on witness testimony is nether a singular entity or originates on Earth.

- Object emanates a dull mechanical sound at random intervals.

- Subjects that make physical contact with the object seem to "flicker" out of existence. It is unconfirmed if subjects are transported inside the object or else where.

- Subjects are returned after a unspecified or random duration with their eyes removed and a note fused to their body. This note is speculated to be a warning, stating "not for humans, not meant for you to see".

- Object will probably be considered Euclid/uncontained as multiple instances exist and are considered sapient. It is to be assumed the object would attempt escape should it be left to its own devices.

I feel compelled to say that this sounds a bit like an episode of Doctor Who, season 7 Episode 4, "The Power of Three" where a ton of black cubes appear with no apparent reason. If you end up writing this, be wary of having your SCP be too similar or you be accused of copying or playing off pop culture.

Thanks for bringing that to my attention. I haven't really watched Doctor Who, side from a few random episodes, so I had no idea. I'll make sure to look into it so I am not inadvertently copying anything.

A side from that, do you have any suggestions or input about what I have laid out?

Subjects are returned after a unspecified or random duration with their eyes removed and a note fused to their body. This note is speculated to be a warning, stating "not for humans, not meant for you to see".

This feels a bit tacked on and just unnecessary death. I don't see a point in the note for I feel it should still have more of a sense of mystery.

Anyway, I like the idea of mysterious UFOs that no one knows what their purpose is and make you look away. Although, the idea is going to need more. Like, what do they do? Do they simply wander? Is it possible to communicate with it? How many are there that the Foundation know? Why does it exist (you don't need to directly answer that)?